<html>
<head>
<script language="javascript">
    function printdiv(printpage) {
        var headstr = "<html><head><title></title></head><body>";
        var footstr = "</body>";
        var newstr = document.all.item(printpage).innerHTML;
        var oldstr = document.body.innerHTML;
        document.body.innerHTML = headstr + newstr + footstr;
        window.print();
        document.body.innerHTML = oldstr;
        return false;
    }
</script>
<title>div print</title>
</head>

<body>
//HTML Page
//Other content you wouldn't like to print
<input name="b_print" type="button" class="ipt"   onClick="printdiv('div_print');" value=" Print ">

<div id="div_print">

<h1 style="Color:Red">The Div content which you want to print</h1>

</div>
//Other content you wouldn't like to print
//Other content you wouldn't like to print
</body>

</html>